Display panel, display device and display method

ABSTRACT

A display panel, a display device and a display method. The display panel includes a first microlens array, a pixel island array and a second lens. The pixel island array is configured to display a plurality of sub-original images. The first microlens array is configured to converge light emitted from the plurality of sub-original images so as to obtain imaging light, and the imaging light is capable of forming a first virtual image. The second lens is on a user viewing side of the display panel relative to the first microlens array, and the second lens is configured to converge the imaging light so as to obtain a second virtual image. The first virtual image is a virtual image in which the plurality of sub-original images are stitched and enlarged, and the second virtual image is an enlarged virtual image of the first virtual image.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is the National Stage of PCT/CN2018/119207 filed onDec. 4, 2018, the disclosure of which is incorporated by reference.

TECHNICAL FIELD

Embodiments of the present disclosure relate to a display panel, adisplay device and a display method.

BACKGROUND

An augmented reality (AR) technology is a new technology that seamlesslyintegrates real world information and virtual world information. Withthe augmented reality technology, by means of computers and otherscientific technologies, physical information (visual information,sound, taste, touch, and etc.), which is difficult to experience withina certain temporal and spatial range in the real world, may be simulatedand then superimposed, so that virtual information may be applied to thereal world, that is, may be perceived by human beings, thereby achievingsensory experiences beyond reality. With the augmented displaytechnology, the virtual world and the real world may be superimposed ona screen in real time for display and may also interact with each other.

SUMMARY

At least one embodiment of the present disclosure provides a displaypanel, which includes a first microlens array, a pixel island array anda second lens. The pixel island array is configured to display aplurality of sub-original images. The first microlens array isconfigured to converge light emitted from the plurality of sub-originalimages so as to obtain imaging light, and a first virtual image can beformed by the imaging light on a side of the first microlens array whichis away from a user viewing side of the display panel. The second lensis on the user viewing side of the display panel relative to the firstmicrolens array, and the second lens is configured to converge theimaging light so as to obtain a second virtual image. The first virtualimage is a virtual image in which the plurality of sub-original imagesare stitched and enlarged, and the second virtual image is an enlargedvirtual image of the first virtual image.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the second lens is a polarized lens, configuredto modulate incident light having a first polarization direction andtransmit incident light having a second polarization directionperpendicular to the first polarization direction, and the pixel islandarray is configured to emit first polarized light having the firstpolarization direction.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the polarized lens includes a liquid crystallens or a lens made of a birefringent material.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a first polarizer. The firstpolarizer is configured to filter ambient light incident from a backside which is opposite to the user viewing side of the display panel, soas to obtain second polarized light having the second polarizationdirection.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array and the pixel islandarray are between the first polarizer and the second lens.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, a display surface of the pixel island array isprovided with a second polarizer so as to exit the first polarized lighthaving the first polarization direction.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a first substrate. The firstsubstrate is a transparent substrate, the first microlens array and thepixel island array are on the first substrate, and a display surface ofthe pixel island array faces the first microlens array.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array has a transmissivestructure, and the first microlens array is between the pixel islandarray and the second lens in a direction perpendicular to the firstsubstrate.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a third microlens array. Thethird microlens array is on a first side of the first substrate, thefirst side of the first substrate faces a back side which is opposite tothe user viewing side of the display panel, and the third microlensarray is configured to compensate for deflection effects of the firstmicrolens array on ambient light.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, a center of the first microlens array is alignedwith a center of the third microlens array, in a direction perpendicularto the first substrate.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array includes a pluralityof first microlenses, the third microlens array includes a plurality ofthird microlenses, and the plurality of first microlenses correspond tothe plurality of third microlenses one by one, and each of the firstmicrolenses is arranged to overlap a corresponding third microlens in adirection perpendicular to the first substrate.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the pixel island array is on a first side of thefirst substrate, the first microlens array is on a second side of thefirst substrate, and the second side of the first substrate faces theuser viewing side of the display panel, and the second lens is on a sideof the first microlens array which is away from the first substrate.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a first flat layer. The firstflat layer is on a side of the pixel island array which is away from thefirst substrate, and between the pixel island array and the thirdmicrolens array.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a second flat layer. The secondflat layer is on a side of the third microlens array which is away fromthe first flat layer, and between the third microlens array and a firstpolarizer, and refractive index of the second flat layer is differentfrom refractive index of the third microlens array.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array has a reflectivestructure, and the pixel island array is between the first microlensarray and the second lens in a direction perpendicular to the firstsubstrate.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array includes a pluralityof first microlenses, and a surface of the plurality of firstmicrolenses which is away from the pixel island array has atransflective film.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array is on a first side ofthe first substrate, the pixel island array is on a second side of thefirst substrate, the first side of the first substrate faces a back sidewhich is opposite to the user viewing side of the display panel, thesecond side of the first substrate faces the user viewing side of thedisplay panel, and a first polarizer is on a side of the first microlensarray which is away from the first substrate.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a compensation layer. Thecompensation layer is between the first microlens array and a firstpolarizer, and is configured to compensate for deflection effects of thefirst microlens array on ambient light.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first microlens array is in direct contactwith the compensation layer, and refractive index of the first microlensarray and refractive index of the compensation layer are the same.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a second substrate. The secondsubstrate is a transparent substrate and is combined with the firstsubstrate in parallel, the second substrate is closer to the userviewing side of the display panel relative to the first substrate, andthe second lens is arranged on the second substrate.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the second lens is arranged on a side of thesecond substrate which is close to or away from the first substrate.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the pixel island array includes a plurality ofpixel islands spaced apart from each other, a gap between pixel islandsallows ambient light from a back side of the display panel to passthrough, and the back side of the display panel is opposite to the userviewing side of the display panel. The first microlens array includes aplurality of first microlenses, and the plurality of pixel islandscorrespond to the plurality of first microlenses one by one. Each of thefirst microlenses is arranged to overlap a corresponding pixel island ina direction perpendicular to the display panel.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, a center of the pixel island array is alignedwith a center of the first microlens array in the directionperpendicular to the display panel.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, each pixel island includes a plurality ofpixels, and each pixel may be an organic light emitting diode pixel, aninorganic light emitting diode pixel, or a liquid crystal display pixel.

For example, the display panel provided by at least one embodiment ofthe present disclosure further includes a shielding layer. The shieldinglayer is arranged between adjacent pixel islands in a direction parallelto the display panel and configured to prevent light emitted from theadjacent pixel islands from interfering with each other.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the shielding layer includes a plurality ofsub-shielding units, and each pixel island is partially surrounded by atleast one sub-shielding unit in the direction parallel to the displaypanel.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, a distance from the first virtual image to thedisplay panel is smaller than a distance from the second virtual imageto the display panel.

For example, in the display panel provided by at least one embodiment ofthe present disclosure, the first virtual image includes a plurality ofsub-virtual images, the plurality of sub-virtual images correspond tothe plurality of sub-original images one by one, and the imaging lightincludes a plurality of sub-imaging light. The first microlens array isconfigured to respectively converge the light emitted from the pluralityof sub-original images so as to obtain the plurality of sub-imaginglight, the plurality of sub-imaging light is capable of being imaged asthe plurality of sub-virtual images respectively, and the plurality ofsub-virtual images are stitched with each other so as to obtain aconsecutive first virtual image.

At least one embodiment of the present disclosure further provides adisplay device, which includes the display panel according to any one ofembodiments described above.

At least one embodiment of the present disclosure further provides adisplay method, applicable to the display panel according to any one ofembodiments described above. The display method includes: displaying theplurality of sub-original images through the pixel island array,converging the light emitted from the plurality of sub-original imagesso as to obtain the imaging light, in which the imaging light is capableof forming the first virtual image on the side of the first microlensarray which is away from the user viewing side of the display panel, andconverging the imaging light so as to obtain the second virtual image,in which the first virtual image is the virtual image in which theplurality of sub-original images are stitched and enlarged, and thesecond virtual image is the enlarged virtual image of the first virtualimage.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solutions of theembodiments of the disclosure, the drawings of the embodiments will bebriefly described in the following; it is obvious that the describeddrawings are only related to some embodiments of the disclosure and thusare not limitative of the disclosure.

FIG. 1 is a schematic diagram of basic principles of near-eye augmentedreality display;

FIG. 2 is a schematic block diagram of a display panel provided by anembodiment of the present disclosure;

FIG. 3A is a schematic diagram of a structure of a display panelprovided by an embodiment of the present disclosure;

FIG. 3B is a schematic diagram of a structure of another display panelprovided by an embodiment of the present disclosure;

FIG. 3C is a schematic diagram of imaging of a display panel provided byan embodiment of the disclosure;

FIG. 4 is a schematic diagram of a structure of a liquid crystal lensprovided by an embodiment of the present disclosure;

FIG. 5 is a schematic plan view of a pixel island array provided by anembodiment of the present disclosure;

FIG. 6 is a schematic diagram of a plurality of sub-original imagesprovided by an embodiment of the present disclosure;

FIG. 7A is a schematic diagram of a structure of another display panelprovided by an embodiment of the present disclosure;

FIG. 7B is a schematic diagram of imaging of another display panelprovided by an embodiment of the present disclosure;

FIG. 8A is a schematic diagram of yet another display panel provided byan embodiment of the present disclosure;

FIG. 8B is a schematic diagram of still another display panel providedby an embodiment of the present disclosure;

FIG. 8C is a schematic plan view of still another display panel providedby an embodiment of the present disclosure;

FIG. 9 is a schematic block diagram of a display device provided by anembodiment of the present disclosure;

FIG. 10 is a flowchart of a display method provided by an embodiment ofthe present disclosure;

FIG. 11A is a schematic diagram of imaging of step S20 in the displaymethod illustrated in FIG. 10 ; and

FIG. 11B is a schematic diagram of imaging of step S30 in the displaymethod illustrated in FIG. 10 .

DETAILED DESCRIPTION

In order to make objects, technical solutions and advantages of theembodiments of the present disclosure, the technical solutions of theembodiments of the present disclosure will be described clearly andcompletely in connection with the drawings related to the embodiments ofthe present disclosure. Apparently, the described embodiments are just apart but not all of the embodiments of the present disclosure. Based onthe described embodiments herein, those skilled in the art can obtainother embodiment(s), without any inventive work, which should be withinthe scope of the present disclosure.

Unless otherwise defined, all the technical and scientific terms usedherein have the same meanings as commonly understood by one of ordinaryskill in the art to which the present disclosure belongs. The terms“first,” “second,” etc., which are used in the present disclosure, arenot intended to indicate any sequence, amount or importance, butdistinguish various components. Also, the terms “comprise,”“comprising,” “include,” “including,” etc., are intended to specify thatthe elements or the objects stated before these terms encompass theelements or the objects and equivalents thereof listed after theseterms, but do not preclude the other elements or objects. The terms“connect”, “connected”, etc., are not intended to define a physicalconnection or mechanical connection, but may include an electricalconnection, directly or indirectly. “On,” “under,” “right,” “left” andthe like are only used to indicate relative position relationship, andwhen the position of the object which is described is changed, therelative position relationship may be changed accordingly.

In order to keep the following description of the embodiments of thepresent disclosure clear and concise, detailed descriptions of knownfunctions and known components are omitted from the present disclosure.

Near-eye display is also referred to as head-mounted display or wearabledisplay, which may create a virtual image within a field of view of oneeye or both eyes. The near-eye display may be applied to fields such asaviation, military, medical, digital soldier system, aiming system, etc.

In the field of augmented reality display, the near-eye AR display maybe implemented by stitching pixel islands. FIG. 1 is a schematic diagramof basic principles of near-eye augmented reality display. Asillustrated in FIG. 1 , a near-eye display panel includes a substrate91, a microlens array 90 and a pixel group array 92. The pixel grouparray 92 includes a first pixel group 92 a, a second pixel group 92 b, athird pixel group 92 c and a fourth pixel group 92 d. The microlensarray 90 includes a microlens 90 a, a microlens 90 b, a microlens 90 cand a microlens 90 d. The microlens 90 a images an image displayed bythe first pixel group 92 a on a virtual image surface so as to obtain asub-virtual image 93 a, the microlens 90 b images an image displayed bythe second pixel group 92 b on the virtual image surface so as to obtaina sub-virtual image 93 b, the microlens 90 c images an image displayedby the third pixel group 92 c on the virtual image surface so as toobtain a sub-virtual image 93 c, and the microlens 90 d images an imagedisplayed by the fourth pixel group 92 d on the virtual image surface soas to obtain a sub-virtual image 93 d. The sub-virtual image 93 a, thesub-virtual image 93 b, the sub-virtual image 93 c and the sub-virtualimage 93 d are stitched for forming a consecutive virtual image 93, andthe virtual image 93 is an image obtained by imaging an image displayedby the pixel group array 92 through the microlens array 90. Because theangle of the field of view of each microlens (microlens 90 a, microlens90 b, microlens 90 c or microlens 90 d) is less than 3 degrees, duringthe near-eye display, a human eye can only see a portion of the virtualimage picture formed by stitching images displayed by 1-2 pixel groups,while cannot simultaneously observe the picture formed by the entirepixel group array 92. Such display effect is unacceptable in the ARdisplay field.

As illustrated in FIG. 1 , when an eye 94 is in a second observationarea, the eye 94 may only receive the light incident to the secondobservation area, that is, may only view a portion of the virtual imagepicture formed by stitching the sub-virtual image 93 b and thesub-virtual image 93 c, while the eye 94 cannot receive the lightincident to virtual image pictures for a first observation area and athird observation area, thus may not view the virtual image pictureformed by stitching the sub-virtual image 93 a and the sub-virtual image93 d.

In addition, for the near-eye display, the depth-of-field distance is1-2 meters or more. In the near-eye display panel illustrated in FIG. 1, the aperture of a microlens is about 1 mm, while it is impossible toimplement the depth-of-field distance of 1-2 meters using the microlenswith the aperture of 1 mm. According to the actual imaging capabilityevaluation of microlenses, the maximum imaging depth of field distanceof the near-eye display panel illustrated in FIG. 1 is less than 10 cmand the depth of field distance is smaller.

Some embodiments of the present disclosure provide a display panel, adisplay device and a display method. The display panel implements imagestitching through a first microlens array, and then implements near-eyedisplay and far depth of field through a second lens, so that more orcomplete virtual images may be viewed and the depth of field is faraway. The display panel at least has the following technicalcharacteristics and advantages: high light efficiency, large field ofview, thinness, far depth of field, integration of pixel islands.

Embodiments of the present disclosure will be described in detail belowwith reference to the accompanying drawings, however the presentdisclosure is not limited to these specific embodiments.

FIG. 2 is a schematic block diagram of a display panel provided by anembodiment of the present disclosure, FIG. 3A is a schematic diagram ofa structure of a display panel provided by an embodiment of the presentdisclosure, FIG. 3B is a schematic diagram of a structure of anotherdisplay panel provided by an embodiment of the present disclosure, andFIG. 3C is a schematic diagram of imaging of a display panel provided byan embodiment of the disclosure.

For example, as illustrated in FIGS. 2 and 3A, a display panel 100includes a first microlens array 10, a pixel island array 11 and asecond lens 12. The pixel island array 11 is configured to display aplurality of sub-original images. The first microlens array 10 isconfigured to converge light emitted from the plurality of sub-originalimages so as to obtain imaging light, and a first virtual image can beformed by the imaging light on a side of the first microlens array 10which is away from a user viewing side A of the display panel 100. Asillustrated in FIGS. 3A to 3C, the second lens 12 is located on the userviewing side A of the display panel 100 relative to the first microlensarray 10, that is, the second lens 12 is closer to the user viewing sideA of the display panel 100 relative to the first microlens array 10, andthe second lens 12 is configured to converge imaging light 36 so as toobtain a second virtual image 31. The first virtual image 30 is avirtual image in which the plurality of sub-original images are stitchedand enlarged, and the second virtual image 31 is an enlarged virtualimage of the first virtual image 30, that is, the size of the firstvirtual image 30 is smaller than the size of the second virtual image31.

For example, the display panel 100 provided by the embodiments of thepresent disclosure may be applied to augmented reality (AR) displays. Inthe present disclosure, the pixel island array 11 is directly located infront of a human eye, and light emitted from the pixel island array 11is directly projected to the human eye through optical deflection ofmulti-layer lenses (e.g., the first microlens array 10 and the secondlens 12), so that the human eye may see the display contents of thepixel island array 11. While with respect to a user, ambient lightoutside the display panel may be projected to the human eye fromtransparent spacing regions in the pixel island array 11, so that thehuman eye may see scenes outside the display panel 100, therebyachieving the augmented reality display effect. Compared with AR displaydevices adopting the waveguide technology and the like, the AR displayincluding the display panel 100 provided by the embodiments of thepresent disclosure has higher light energy utilization rate and displayeffect.

For example, as illustrated in FIG. 3C, the distance between the firstvirtual image 30 and the display panel 100 is smaller than the distancebetween the second virtual image 31 and the display panel 100, that is,an imaging plane of the first virtual image 30 is between the displaypanel 100 and an imaging plane of the second virtual image 31. The firstvirtual image 30 and the second virtual image 31 are both imaged on aback side (or outside) B which is opposite to the user viewing side (orinside) A of the display panel 100. The user viewing side A and the backside B are two sides of the display panel 100, respectively.

For example, in terms of optical imaging, a plurality of sub-originalimages displayed by the pixel island array 11 are objects of the firstmicrolens array 10, the first virtual image 30 is an image of the firstmicrolens array 10, and the first microlens array 10 may enlarge andstitch the plurality of sub-original images into a consecutive firstvirtual image 30. It should be noted that, in practice, the firstvirtual image 30 is not actually imaged.

Accordingly, the first virtual image 30 is an object of the second lens12, and the second virtual image 31 is an image of the second lens 12.The second lens 12 may enlarge and image the consecutive first virtualimage 30 at a certain position with a far depth of field so as to obtaina virtual image having the far depth of field, i.e., the second virtualimage 31 illustrated in FIG. 3C, thereby achieving the augmented realitydisplay effect having greater depth of field. The second lens 12 maydeflect the light of the first virtual image 30 for entering into anobservation area, such as a field of view that a human eye can view, sothat the human eye may view part or all of the second virtual image 31simultaneously, thereby achieving the technical effect of near-eyedisplay.

For example, as illustrated in FIG. 3C, an imaging process of the firstmicrolens array 10 and the second lens 12 is described by taking Q1point on the first virtual image 30 as an example. Light emitted fromone point in a first pixel island 11 a in the pixel island array 11 isimaged as Q1 point in the first virtual image 30 through a firstmicrolens 10 a in the first microlens array 10, and Q1 point in thefirst virtual image 30 is imaged as Q2 point in the second virtual image31 through the second lens 12. As illustrated in FIG. 3C, firstpolarized light emitted from one point in the first pixel island 11 abecomes the imaging light 36 (e.g., first imaging light) after beingconverged by the first microlens 10 a. Reverse extension lines of thefirst imaging light 36 may converge at Q1 point in the first virtualimage 30. The first imaging light 36 is incident into the second lens12, the first imaging light 36 is deflected when passing through thesecond lens 12, and the light exited from the second lens 12 is secondimaging light 37. The second imaging light 37 may be incident into ahuman eye 35, and reverse extension lines of the second imaging light 37may converge at Q2 point in the second virtual image 31. Finally, thehuman eye 35 may see Q2 point in the second virtual image 31. The firstimaging light 36 and the second imaging light 37 are both polarizedlight having a first polarization direction.

It should be noted that in the example illustrated in FIG. 3C, lightemitted from a pixel point in the first pixel island 11 a enters thehuman eye 35 passing through the first microlens 10 a and then thesecond lens 12. The solid line with arrow in FIG. 3C indicates apropagation path of the actual light, while the dashed line indicates areverse extension line of the actual light.

In the display panel 100 provided by the embodiments of the presentdisclosure, the pixel island array 11 is used to implement imagedisplay, the first microlens array 10 is used to implement imagestitching, and the second lens 12 is used to implement near-eye display.Therefore, the field of view of the display panel 100 is determined bythe second lens 12, for example, the field of view of the display panel100 is determined by surface-type parameters (e.g., focal length,aperture, and etc.) of the second lens 12. Compared with a conventionalAR display device using waveguide technology or the like, the AR displayincluding the display panel 100 provided by the embodiments of thepresent disclosure has a larger field of view. In addition, in thisdisplay panel 100, elements such as the first microlens array, the pixelisland array, the second lens and the like may be fabricated to have asmall structure, the object plane position of the second lens is theposition of the first virtual image, and the second lens may be directlyattached to or fabricated on a substrate, so that the overall structureof the display panel 100 is thinner and lighter. In addition, the depthof field of the near-eye display panel illustrated in FIG. 1 is limitedby the imaging capability of the microlenses, so that the depth of fieldis very small. While in the display panel 100 provided by theembodiments of the present disclosure, the first microlens array 10 isonly used to implement image stitching, the depth of field is determinedby the second lens 12, and the aperture of the second lens 12 isrelatively large, so that the display panel 100 has the technical effectof far depth of field.

For example, the second lens 12 is a polarized lens, which may be, forexample, a convex lens. The second lens 12 is configured to modulateincident light having a first polarization direction and transmitincident light having a second polarization direction perpendicular tothe first polarization direction. That is, the polarized lens may onlyhave the effect as a lens on the polarized light having the firstpolarization direction, while the polarized lens is equivalent to flatglass for the polarized light having the second polarization direction.The pixel island array 11 is configured to emit first polarized lighthaving the first polarization direction, so that the second lens 12 maymodulate the first polarized light emitted by the pixel island array 11,thus the image displayed by the pixel island array 11 may finally bemodulated by the second lens 12.

For example, the polarized lens includes a liquid crystal lens or a lensformed of a birefringent material, and the like.

FIG. 4 is a schematic diagram of a structure of a liquid crystal lensprovided by an embodiment of the present disclosure.

The liquid crystal is a biaxial crystal, and the liquid crystal lensonly modulates polarized light having a first polarization direction,for example, that is, the liquid crystal lens may only have modulationeffect on first polarized light having the first polarization direction.While for second polarized light having a second polarization direction,the refractive index of the liquid crystal layer in the liquid crystallens for the second polarized light is always equal to a short axisrefractive index, that is, the liquid crystal lens is equivalent to aparallel plate, and has no modulation effect on the second polarizedlight. Meanwhile, the focal length of the liquid crystal lens may bemodulated in real time according to the applied modulation signals,therefore, the depth of field finally viewed by a human eye may also bemodulated in real time, so that the display panel has the technicaleffect that the depth of field is controllable. As illustrated in FIG. 4, in some embodiments, the liquid crystal lens may include a liquidcrystal cell 40, a first electrode 41 and a second electrode 42, and theliquid crystal cell 40 includes liquid crystal molecules 401. The firstelectrode 41 and the second electrode 42 are configured to controldeflection angles of liquid crystal molecules in different regions so asto obtain the same phase distribution as a resin lens or a glass lens,thereby forming a lens. For example, when the deflection degree of eachliquid crystal molecule is different, the focal length of the lensformed equivalently is also different, that is, the focal length of anoptical liquid crystal lens may be adjusted by adjusting the deflectionangles of the liquid crystal molecules in different regions.

For example, when deflection angles of liquid crystal molecules in eachregion of the liquid crystal cell 40 are illustrated in FIG. 4 , anequivalent structure of the liquid crystal lens composed of the liquidcrystal cell 40, the first electrode 41 and the second electrode 42 maybe represented as a lens 43 illustrated in FIG. 4 . For example, thelens 43 is a convex lens.

For example, the first electrode 41 includes a plurality of firstsub-electrodes, the plurality of first sub-electrodes are insulated fromeach other, and the plurality of first sub-electrodes are stripelectrodes. The second electrode 42 may include a plate electrode. Itshould be noted that the second electrode 42 may also include aplurality of second sub-electrodes, the plurality of secondsub-electrodes are strip electrodes and are insulated from each other,and for example, the plurality of second sub-electrodes correspond tothe plurality of first sub-electrodes one by one. As illustrated in FIG.4 , the first electrode 41 and the second electrode 42 may be on bothsides of the liquid crystal cell 40, but the present disclosure is notlimited thereto, and the first electrode 41 and the second electrode 42may also be on a same side of the liquid crystal cell 40. The shape,actual number and position of the first electrode 41 and the secondelectrode 42 in the present disclosure are not limited as long as thefirst electrode 41 and the second electrode 42 may adjust deflectionangle of each of the liquid crystal molecules 401 in the liquid crystalcell 40 as required.

For example, the first electrode 41 and the second electrode 42 are bothtransparent electrodes.

For example, the refractive index of a birefringent material which isrelated to the polarization direction of light waves is anisotropic. Thebirefringent material may include calcium carbonate crystal, Shi Yingcrystal, mica crystal, sapphire crystal, etc.

For example, as illustrated in FIG. 3A, the display panel 100 furtherincludes a first polarizer 14. For example, a transmission axis of thefirst polarizer 14 is parallel to a second polarization direction, sothat after ambient light (i.e., natural light) passes through the firstpolarizer 14, it becomes polarized light having the second polarizationdirection, and the polarized light having the second polarizationdirection is not modulated by the second lens 12, that is, ambient lightpassing through the entire display panel 100 is not modulated by thesecond lens 12. More specifically, the first polarizer 14 is configuredto filter ambient light incident from the back side B of the displaypanel 100 which is opposite to the user viewing side A of the displaypanel 100, so as to obtain second polarized light having the secondpolarization direction. The second lens 12 has no modulation effect onthe second polarized light, that is, when the second polarized lightpasses through the second lens 12, its optical paths will not change andstill propagate along a straight line, so that the scenes outside thedisplay panel seen by a human eye are not affected and changed by thesecond lens 12. As a result, ambient light entering the display panel100 from the back side B (i.e., external environment) is not modulated,but directly incident into the human eye, thereby achieving theaugmented reality display effect. The first polarizer 14 is, forexample, a wire grid polarizing layer or a PVA (polyvinyl alcohol)polarizer, and the embodiments of the present disclosure are not limitedthereto.

For example, the first microlens array 10 and the pixel island array 11are between the first polarizer 14 and the second lens 12.

For example, as illustrated in FIGS. 3A to 3C, the display panel 100further includes a first substrate 101. The first substrate 101 is atransparent substrate, and the transparent substrate may be, forexample, a glass substrate, a plastic substrate, or the like. The firstmicrolens array 10, the pixel island array 11 and the first polarizer 14are all arranged on the first substrate 101, i.e., the first substrate101 provides supporting and protecting functions, and other structuresincluding the second lens may also be sequentially laminated on thefirst substrate 101, thereby forming an overall structure.

For example, a projection of the first microlens array 10 on the firstsubstrate 101 is within a projection of the second lens 12 on the firstsubstrate 101. A center of the first microlens array 10 is aligned witha center of the second lens 12 in a direction perpendicular to the firstsubstrate 101, that is, in the X direction illustrated in FIGS. 3A to3C.

For example, in the direction perpendicular to the first substrate 101,the first polarizer 14 is on a first side of the first substrate 101,and the first side of the first substrate 101 faces the back side B ofthe display panel 100. The first microlens array 10 and the pixel islandarray 11 are between the first polarizer 14 and the second lens 12. Adisplay surface of the pixel island array 11 faces the first microlensarray 10, so that light emitted from the pixel island array 11 may beincident on the first microlens array 10 and converged by the firstmicrolens array 10 so as to obtain the imaging light 36 which can form aconsecutive first virtual image 30.

For example, as illustrated in FIG. 3B, the display surface of the pixelisland array 11 may be provided with a second polarizer 18 so as to exitfirst polarized light having a first polarization direction. That is,the second polarizer 18 is arranged between the pixel island array 11and the first microlens array 10 so as to ensure that the light incidenton the first microlens array 10 is only the first polarized lightemitted by the pixel island array 11, and to prevent stray light frominterfering with the imaging effect. For example, the second polarizer18 may be a wire grid layer fabricated on the first substrate.

For example, as illustrated in FIG. 3B, the second polarizer 18 may be aone-piece structure. The present disclosure is not limited to this, andthe second polarizer may also include a plurality of sub-polarizerscorresponding to the plurality of pixel islands in the pixel islandarray 11 one by one.

For example, as illustrated in FIGS. 3A and 3B, the display panel 100further includes a second substrate 102. In this example, the secondsubstrate 102 may share the supporting function of the first substrate101, thereby reducing the difficulty of fabrication and improving theyield. The second substrate 102 is a transparent substrate and iscombined with the first substrate 101 in parallel, on a second side ofthe first substrate 101 which faces the user viewing side A of thedisplay panel 100. That is, the second substrate 102 is closer to theuser viewing side A of the display panel 100 relative to the firstsubstrate 101.

For example, as illustrated in FIGS. 3A and 3B, the display panel 100may further include a third flat layer 17. The third flat layer 17 isbetween the first substrate 101 and the second substrate 102, covers thefirst microlens array 10 and functions as planarization. It should benoted that the refractive index of the third flat layer 17 is differentfrom that of each of the first microlenses in the first microlens array10.

For example, the second lens 12 is arranged on the second substrate 102.For example, in the example illustrated in FIG. 3A, the second lens 12is arranged on a side of the second substrate 102 which is away from thefirst substrate 101. However, the present disclosure is not limited tothis, and the second lens 12 may also be arranged on a side of thesecond substrate 102 which is close to the first substrate 101.Alternatively, both sides of the second substrate 102 are provided withone second lens 12, respectively.

For example, in some examples, the display panel 100 may not include thesecond substrate 102, in this case, the second lens 12 is also arrangedon the first substrate 101. For example, the second lens 12 is on a sideof the third flat layer 17 which is away from the first microlens array10.

For example, as illustrated in FIGS. 3A and 3B, the first microlensarray 10 may include a plurality of first microlenses, and the pluralityof first microlenses are arranged adjacent to each other or spaced apartfrom each other. The pixel island array 11 includes a plurality of pixelislands, and the plurality of pixel islands are also spaced apart fromeach other. The spacing regions between the first microlenses aretransparent, and the spacing regions between the plurality of pixelislands are also transparent, that is, a gap between adjacent pixelislands allows ambient light from the back side B of the display panelto pass through, and the ambient light may also pass through the gapbetween the adjacent first microlenses.

For example, the shape, material, refractive index or the like of eachof the first microlenses in the first microlens array 10 may be designedaccording to actual application scenarios, and the embodiments of thepresent disclosure are not limited to this. Each of the firstmicrolenses in the first microlens array 10 may have the same shape,material, refractive index, etc.

For example, the shape and size of each pixel island in the pixel islandarray 11 may be the same, or may not be the same.

For example, a plurality of pixel islands correspond to a plurality offirst microlenses one by one. For example, in a direction perpendicularto the first substrate 101, each of the first microlenses is arranged tooverlap a corresponding pixel island. In the example illustrated inFIGS. 3A to 3C, the first microlens array 10 includes a first microlens10 a, a first microlens 10 b, a first microlens 10 c and a firstmicrolens 10 d, and the pixel island array 11 includes a first pixelisland 11 a, a second pixel island 11 b, a third pixel island 11 c and afourth pixel island 11 d. The first microlens 10 a corresponds to thefirst pixel island 11 a, the first microlens 10 b corresponds to thesecond pixel island 11 b, the first microlens 10 c corresponds to thethird pixel island 11 c, and the first microlens 10 d corresponds to thefourth pixel island 11 d.

For example, in a direction perpendicular to the first substrate 101, acenter of the pixel island array 11 is aligned with a center of thefirst microlens array 10. The size of the pixel islands in the pixelisland array 11, the gap between the pixel islands and the opticalparameters (including aperture, focal length, etc.) of each of the firstmicrolenses are selected, so that sub-original images displayed by allthe pixel islands in the pixel island array 11 may be enlarged andstitched into a consecutive first virtual images 30 at a certainposition with a virtual image distance.

For example, in a direction perpendicular to the first substrate 101, aprojection of each pixel island on the first substrate 101 is within aprojection of the corresponding first microlens on the first substrate101.

For example, in a direction perpendicular to the first substrate 101, acenter of each pixel island is aligned with a center of thecorresponding first microlens, thereby ensuring that each of the firstmicrolenses may enlarge the sub-original image displayed by thecorresponding pixel island into the corresponding sub-virtual image.

FIG. 5 is a schematic plan view of a pixel island array provided by anembodiment of the present disclosure.

For example, as illustrated in FIG. 5 , in some examples, the pixelisland array 11 includes a plurality of pixel islands arranged in 4 rowsand 4 columns.

For example, each pixel island includes a plurality of pixels, and eachpixel may be an organic light emitting diode pixel, an inorganic lightemitting diode pixel, a liquid crystal display pixel, a Micro-LED pixel,or the like.

For example, the display panel 100 provided by the embodiments of thepresent disclosure may implement colorized display. As illustrated inFIG. 5 , in the enlarged schematic diagram of the pixel islands in thedashed circle frame, each pixel island includes 20 pixels, and the 20pixels are arranged in 4 rows and 5 columns. For example, the displaypanel 100 may implement colorized stitching display. All pixels in eachpixel island may emit light of a same color, while different pixelislands emit light of different colors. For example, adjacent threepixel islands in a same row respectively emit red light, blue light andgreen light, and the first virtual image stitched and formed finally isa color image. Alternatively, the display panel 100 may be a directcolorized display. For example, each pixel island includes at least afirst pixel 110, a second pixel 111 and a third pixel 112, and the firstpixel 110, the second pixel 111 and the third pixel 112 respectivelyemit light of different colors. For example, the first pixel 110 emitsred light, the second pixel 111 emits blue light and the third pixel 112emits green light.

For example, a plurality of pixel islands correspond to a plurality ofsub-original images one by one.

FIG. 6 is a schematic diagram of a plurality of sub-original imagesprovided by an embodiment of the present disclosure.

For example, in some examples, as illustrated in FIG. 6 , a plurality ofsub-original images include a first sub-original image 32 a, a secondsub-original image 32 b, a third sub-original image 32 c and a fourthsub-original image 32 d, and the plurality of sub-original imagesconstitute a complete original image. For example, the first pixelisland 11 a displays the first sub-original image 32 a, the second pixelisland 11 b displays the second sub-original image 32 b, the third pixelisland 11 c displays the third sub-original image 32 c, and the fourthpixel island 11 d displays the fourth sub-original image 32 d.

For example, the shape and size of a plurality of sub-original imagesmay be the same. For example, as illustrated in FIG. 6 , the firstsub-original image 32 a, the second sub-original image 32 b, the thirdsub-original image 32 c and the fourth sub-original image 32 d are allrectangular in shape and the same in size. However, the presentdisclosure is not limited to this, and in some examples, at least someof the sub-original images are different in size, in still otherexamples, at least some of the sub-original images are different inshape. For example, the plurality of sub-original images are all thesame in shape, for example, all rectangular, but at least some of thesub-original images are different in size from each other. It should benoted that the actual number, size, shape or the like of the pluralityof sub-original images may be divided according to actual needs, as longas it is ensured that the plurality of sub-original images may bestitched into a complete original image, and the embodiments of thepresent disclosure are not limited to this.

For example, the first virtual image 30 includes a plurality ofsub-virtual images, and the plurality of sub-virtual images correspondto a plurality of sub-original images one by one. The imaging light 36includes a plurality of sub-imaging light, and the first microlens array10 is configured to respectively converge light emitted from theplurality of sub-original images so as to obtain the plurality ofsub-imaging light, the plurality of sub-imaging light is capable ofbeing respectively imaged as the plurality of sub-virtual images, theplurality of sub-virtual images are stitched with each other so as toobtain a consecutive first virtual image 30, and the plurality ofsub-virtual images do not overlap each other in a directionperpendicular to the first substrate 101. As illustrated in FIG. 3C, insome examples, a plurality of sub-virtual images are respectively afirst sub-virtual image 30 a, a second sub-virtual image 30 b, a thirdsub-virtual image 30 c and a fourth sub-virtual image 30 d, and thefirst microlens 10 a converges light emitted from an image (e.g., thefirst sub-original image) displayed by the first pixel island 11 a so asto obtain first sub-imaging light which is capable of being imaged asthe first sub-virtual image 30 a, and the first sub-virtual image 30 ais an enlarged virtual image of the first sub-original image. The firstmicrolens 10 b converges light emitted from an image (e.g., the secondsub-original image) displayed by the second pixel island 11 b so as toobtain second sub-imaging light which is capable of being imaged as thesecond sub-virtual image 30 b, and the second sub-virtual image 30 b isan enlarged virtual image of the second sub-original image. The firstmicrolens 10 c converges light emitted from an image displayed by thethird pixel island 11 c (e.g., the third sub-original image) so as toobtain third sub-imaging light which is capable of being imaged as thethird sub-virtual image 30 c, and the third sub-virtual image 30 c is anenlarged virtual image of the third sub-original image. The firstmicrolens 10 d converges light emitted from an image displayed on thefourth pixel island 11 d (e.g., the fourth sub-original image) so as toobtain fourth sub-imaging light which is capable of being imaged as thefourth sub-virtual image 30 d, and the fourth sub-virtual image 30 d isan enlarged virtual image of the fourth sub-original image. For example,in a direction parallel to the first substrate 101, i.e., the Ydirection in FIG. 3C, the first sub-virtual image 30 a, the secondsub-virtual image 30 b, the third sub-virtual image 30 c and the fourthsub-virtual image 30 d are sequentially stitched for obtaining a firstvirtual image 30, and the first virtual image 30 is an enlarged virtualimage of the complete original image displayed by the pixel island array11.

For example, in some embodiments, the first microlens array 10 has atransmissive structure, and in a direction perpendicular to the firstsubstrate 101, the first microlens array 10 is between the pixel islandarray 11 and the second lens 12, so that light emitted in the displayprocess of the pixel island array 11 is transmitted through the firstmicrolens array 10 and then incident into a human eye through the secondlens 12.

For example, as illustrated in FIGS. 3A to 3C, in a directionperpendicular to the first substrate 101, the pixel island array 11 ison the first side of the first substrate 101, the first microlens array10 is on a second side of the first substrate 101, and the second sideof the first substrate 101 faces the user viewing side A of the displaypanel 100, that is, a display surface of the pixel island array 11 mayface the human eye 35. The second lens 12 is on a side of the firstmicrolens array 10 which is away from the first substrate 101.

For example, as illustrated in FIGS. 3A to 3C, the display panel 100further includes a third microlens array 13. The third microlens array13 is configured to compensate the deflection effect of the firstmicrolens array 10 on ambient light so as to prevent crosstalk of thefirst polarized light emitted from the pixel island array 11 by theambient light. The third microlens array 13 is on the first side of thefirst substrate 101. For example, the third microlens array 13 is on aside of the pixel island array 11 which is away from the first substrate101.

For example, in a direction perpendicular to the first substrate 101, acenter of the first microlens array 10 is aligned with a center of thethird microlens array 13.

For example, the third microlens array 13 includes a plurality of thirdmicrolenses, and the plurality of first microlenses correspond theplurality of third microlenses one by one. For example, as illustratedin FIGS. 3A and 3B, the plurality of third microlenses include a thirdmicrolens 13 a, a third microlens 13 b, a third microlens 13 c and athird microlens 13 d, and the third microlens 13 a corresponds to thefirst microlens 10 a, the third microlens 13 b corresponds to the firstmicrolens 10 b, the third microlens 13 c corresponds to the firstmicrolens 10 c, and the third microlens 13 d corresponds to the firstmicrolens 10 d.

For example, in a direction perpendicular to the first substrate 101,each of the first microlenses is arranged to overlap a correspondingthird microlens. As illustrated in FIGS. 3A and 3B, the third microlens13 a completely overlaps the first microlens 10 a, the third microlens13 b completely overlaps the first microlens 10 b, the third microlens13 c completely overlaps the first microlens 10 c, and the thirdmicrolens 13 d completely overlaps the first microlens 10 d.

For example, the shape, material, refractive index or the like of theplurality of third microlenses may be designed according to actualapplication scenarios, and the embodiments of the present disclosure arenot limited to this. For example, the shape, material, refractive indexor the like of the plurality of third microlenses may be the same.

For example, the refractive index of each of the first microlenses isthe same as that of each third microlens, that is, the first microlensand the third microlens are made of a same material.

For example, as illustrated in FIGS. 3A to 3C, each of the firstmicrolenses is a convex lens, and accordingly, each third microlens maybe a concave lens.

For example, in this example, ambient light is filtered by the firstpolarizer 14 so as to obtain second polarized light having a secondpolarization direction. The second polarized light passes through thethird lens array 13, the first lens array 10 and the second lens 12 insequence and finally enters the human eye 35. For the second polarizedlight, the combination of the third lens array 13 and the first lensarray 10 is equivalent to a flat plate, so that an optical path of thesecond polarized light after passing through the third lens array 13 andthe first lens array 10 remains unchanged and still propagates along astraight line. Meanwhile, because the second lens 12 does not modulatethe second polarized light, thus, after the second polarized lightpasses through the third lens array 13, the first lens array 10 and thesecond lens 12 in sequence, it's optical path remains unchanged andpropagates along a straight line, so that the ambient light does notinterfere with the first polarized light emitted by the pixel islandarray 11, and the human eye may see scenes outside the display panel100. The display panel 100 may implement augmented reality display.

For example, as illustrated in FIGS. 3A to 3C, the display panel 100further includes a first flat layer 15. The first flat layer 15 is on aside of the pixel island array 11 which is away from the first substrate101, and between the pixel island array 11 and the third microlens array13. The first flat layer 15 is used for planarization in order to formthe third microlens array 13 thereon, and meanwhile, the first flatlayer 15 may isolate the pixel island array 11 and the third microlensarray 13.

For example, the first flat layer 15 may be made of an insulatingmaterial.

For example, as illustrated in FIGS. 3A to 3C, the display panel 100further includes a second flat layer 16. The second flat layer 16 is ona side of the third microlens array 13 which is away from the first flatlayer 15, and between the third microlens array 13 and the firstpolarizer 14.

For example, the refractive index of the second flat layer 16 isdifferent from the refractive index of the third microlens array 13 soas to ensure that the third microlens array 13 may compensate thedeflection effect of the first microlens array 10 on the ambient lightand prevent the influence of the ambient light on the display effect ofthe display panel 100.

For example, the second flat layer 16 may also be made of an insulatingmaterial.

It should be noted that the pixel island array, the first microlensarray and the third microlens array illustrated in FIGS. 3A, 3B, 3C, and5 are all schematic, and the actual number, arrangement, shape or thelike of the pixel island array, the first microlens array and the thirdmicrolens array may be designed according to actual needs, and thepresent disclosure is not limited to this.

FIG. 7A is a schematic diagram of a structure of another display panelprovided by an embodiment of the present disclosure, and FIG. 7B is aschematic diagram of imaging of another display panel provided by anembodiment of the present disclosure.

For example, as illustrated in FIGS. 7A and 7B, other embodiments of thepresent disclosure provide a display panel 200, and the display panel200 may include a first microlens array 20, a pixel island array 21 anda second lens 22. The pixel island array 21 is configured to display aplurality of sub-original images, and the first microlens array 20 isconfigured to converge light emitted from the plurality of sub-originalimages so as to obtain imaging light 38 which is capable of forming afirst virtual image 30 on a side of the first microlens array 20 whichis away from a user viewing side A of the display panel 200. Relative tothe first microlens array 20, the second lens 22 is on the user viewingside of the display panel 200, and the second lens 22 is configured toconverge the imaging light 38 so as to obtain a second virtual image 31.The first virtual image 30 is a virtual image in which a plurality ofsub-original images are stitched and enlarged, and the second virtualimage 31 is an enlarged virtual image of the first virtual image 30.

For example, as illustrated in FIGS. 7A and 7B, the display panel 100further includes a first substrate 201 and a second substrate 202. Thefirst microlens array 20 and the pixel island array 21 are both arrangedon the first substrate 201, and the second lens 22 is arranged on thesecond substrate 202.

For example, the first microlens array 20 has a reflective structure. Ina direction perpendicular to the first substrate 201, the pixel islandarray 21 is between the first microlens array 20 and the second lens 22.Light emitted by the pixel island array 21 in the display process isreflected and converged by the first microlens array 20, and thenincident into a human eye through the second lens 22.

For example, the first microlens array 20 includes a plurality of firstmicrolenses, and the pixel island array 21 includes a plurality of pixelislands. In the example illustrated in FIG. 7A, the first microlensarray 20 includes a first microlens 20 a, a first microlens 20 b, afirst microlens 20 c and a first microlens 20 d, and the pixel islandarray 21 includes a first pixel island 21 a, a second pixel island 21 b,a third pixel island 21 c and a fourth pixel island 21 d. The firstmicrolens 20 a corresponds to the first pixel island 21 a, the firstmicrolens 20 b corresponds to the second pixel island 21 b, the firstmicrolens 20 c corresponds to the third pixel island 21 c, and the firstmicrolens 20 d corresponds to the fourth pixel island 21 d.

For example, as illustrated in FIG. 7A, a surface of the plurality offirst microlenses which is away from the pixel island array 21 has atransflective film 28. When light emitted from the pixel island array 21is incident on the transflective film 28, part of the light emitted fromthe pixel island array 21 is reflected, and the reflected part of thelight (the reflected part of the light is the imaging light 38 in FIG.7B) is converged through the second lens 22 and finally enters a humaneye. The other part of the light emitted by the pixel island array 21 istransmitted out, and the transmitted part of the light does notparticipate in imaging. With respect to ambient light from a back side Bof the display panel 200, when the ambient light is incident on thetransflective film 28, part of the ambient light is reflected, while theother part of the ambient light is transmitted and finally incident intothe human eye, so that the human eye may see external objects. Thetransflective film 28 may increase the ambient light incident into thehuman eye, thereby increasing the transparency and enhancing the effectof augmented reality display.

For example, the pixel island array 21 and the first microlens array 20are respectively on both sides of the first substrate 201, the pixelisland array 21 is on a second side of the first substrate 201, and thefirst microlens array 20 is on a first side of the first substrate 201.For example, the second side of the first substrate 201 faces the userviewing side A of the display panel 200, and the first side of the firstsubstrate 201 faces the back side B which is opposite to the userviewing side A of the display panel 200.

For example, as illustrated in FIG. 7A, the display panel 200 furtherincludes a first polarizer 24, and the first polarizer 24 is on a sideof the first microlens array 20 which is away from the first substrate201. The first polarizer 24 is configured to filter the ambient lightincident from the back side B which is opposite to the user viewing sideA of the display panel 200 so as to obtain second polarized light havinga second polarization direction, thereby ensuring that ambient lighttransmitted through the entire display panel 200 is not modulated by thesecond lens 22.

For example, as illustrated in FIG. 7A, the display panel 200 furtherincludes a compensation layer 25. The compensation layer 25 is betweenthe first microlens array 20 and the first polarizer 24. Thecompensation layer 25 is used to planarize the first microlens array 20so as to compensate the deflection effect of the first microlens array20 on ambient light and ensure that the ambient light does not interferewith the imaging effect of the display panel 200.

For example, the compensation layer 25 is in direct contact with thefirst microlens array 20, and the refractive index of the firstmicrolens array 20 and the refractive index of the compensation layer 25are the same. For the ambient light (i.e., the second polarized light)incident through the first polarizer 24, the first microlens array 20and the compensation layer 25 are equivalent to forming a flat plate,thus the second polarized light may pass through the first microlensarray 20 and the compensation layer 25 without deflection, that is, theoptical path of the second polarized light after passing through thecompensation layer 25 and the first microlens array 20 is unchanged, andstill propagates along a straight line. Meanwhile, because the secondlens 22 has no modulation effect on the second polarized light.Therefore, after the second polarized light passes through the firstlens array 10, the compensation layer 25 and the second lens 22 insequence, it's optical path is unchanged and propagates along a straightline, so that it is ensured that ambient light does not interfere withthe first polarized light emitted by the pixel island array 21, and thehuman eye may see scenes outside the display panel 200. The displaypanel 200 may implement augmented reality display.

For example, as illustrated in FIG. 7B, the imaging process of the firstmicrolens array 20 and the second lens 22 is described by taking Q1point in the first virtual image 30 as an example. Light emitted from apoint in the first pixel island 21 a in the pixel island array 21 isimaged as Q1 point in the first virtual image 30 through the firstmicrolens 20 a in the first microlens array 20, and Q1 point in thefirst virtual image 30 is imaged as Q2 point in the second virtual image31 through the second lens 22. As illustrated in FIG. 7B, the firstpolarized light emitted from a point in the first pixel island 21 a isreflected and converged through the first microlens 20 a so as to obtainimaging light 38 (e.g., the first imaging light). Reverse extensionlines of the first imaging light 38 may converge at Q1 point in thefirst virtual image 30, the first imaging light 38 is incident into thesecond lens 22, and its optical path is deflected when the first imaginglight 38 passes through the second lens 22. Light exited from the secondlens 22 is second imaging light 39, and the second imaging light 39 maybe incident into the human eye 35. Reverse extension lines of the secondimaging light 39 may converge at Q2 point in the second virtual image31. Finally, the human eye 35 may see Q2 point in the second virtualimage 31. The first imaging light 38 and the second imaging light 39 areboth polarized light having a first polarization direction.

It should be noted that in the example illustrated in FIG. 7B, the firstpolarized light emitted by a pixel point in the first pixel island 21 ais reflected by the first microlens 20 a, and then the reflected firstpolarized light enters the human eye 35 through the second lens 22. Thesolid line with arrow in FIG. 7B indicates a propagation path of theactual light, while the dashed line indicates a reverse extension lineof the actual light.

It should be noted that the detailed description of the first microlensarray 20, the pixel island array 21, the second lens 22, the firstsubstrate 201, the second substrate 202, the first polarizer 24 or thelike illustrated in FIGS. 7A and 7B may refer to the related descriptionof the first microlens array 10, the pixel island array 11, the secondlens 12, the first substrate 101, the second substrate 102 and the firstpolarizer 14 in the embodiments above illustrated in FIGS. 3A to 3C,which will not be repeated here.

Similarly, for other examples of the embodiments illustrated in FIGS. 7Aand 7B, there may be no second substrate, so that the second lens or thelike may be directly laminated and formed on the first substrate.

FIG. 8A is a schematic diagram of yet another display panel provided byan embodiment of the present disclosure, FIG. 8B is a schematic diagramof still another display panel provided by an embodiment of the presentdisclosure, and FIG. 8C is a schematic plan view of still anotherdisplay panel provided by an embodiment of the present disclosure.

In general, light emitted by each pixel in the pixel island array 21propagates in the range of −90 degrees to +90 degrees, that is, thedivergence angle of the light emitted by the pixel islands is large, andthe light emitted by adjacent pixel islands may affect each other. Forexample, part of the light emitted by a pixel island may enter an areaof a first microlens which does not correspond to the pixel island, andthis part of the light may become interference light, thereby affectingthe imaging effect of the first microlens which does not correspond tothe pixel island, and finally affecting the visual effect of theaugmented reality display. The following description will be illustratedby taking the display panel illustrated in FIGS. 7A and 7B as anexample.

As illustrated in FIG. 8A, the first microlens 20 a converges the lightemitted from the image displayed by the first pixel island 21 a so as toobtain first sub-imaging light which is capable of being imaged as thefirst sub-virtual image 30 a, the first microlens 20 b converges thelight emitted from the image displayed by the second pixel island 21 bso as to obtain second sub-imaging light which is capable of beingimaged as the second sub-virtual image 30 b, the first microlens 20 cconverges the light emitted from the image displayed by the third pixelisland 21 c so as to obtain third sub-imaging light which is capable ofbeing imaged as the third sub-virtual image 30 c, and the firstmicrolens 20 d converges the light emitted from the image displayed bythe fourth pixel island 21 d so as to obtain fourth sub-imaging lightwhich is capable of being imaged as the fourth sub-virtual image 30 d.Because the divergence angle of the light emitted from a pixel island istoo large, for example, part of the light 45 emitted from the secondpixel island 21 b may be transmitted to the first microlens 20 a, andthe part of the light 45 and the first sub-imaging light convergedthrough the first microlens 20 a form the first sub-virtual image 30 a,whereby the part of the light 45 may affect the first sub-virtual image30 a. Another part of light 46 emitted from the second pixel island 21 bis transmitted to the first microlens 20 c, and this part of light 46and the third sub-imaging light converged through the first microlens 20c form the third sub-virtual image 30 c, whereby the part of light 46may affect the third sub-virtual image 30 c.

It should be noted that in the embodiments of the present disclosure,“light emitted from an image” means light emitted from each pixel in thepixel island by which the image is displayed.

Based on this, in some embodiments of the present disclosure, asillustrated in FIG. 8B, the display panel 200 further includes ashielding layer 27. The shielding layer 27 is arranged between adjacentpixel islands in a direction parallel to the display panel, i.e., in adirection parallel to the first substrate 201, and configured to preventlight emitted from adjacent pixel islands from interfering with eachother. The shielding layer 27 may limit the divergence angle of thelight emitted from the pixel island, thereby preventing the lightemitted from adjacent pixel islands from interfering with each other,reducing stray light, and improving the imaging effect and visualeffect.

For example, the shielding layer 27 includes a plurality ofsub-shielding units, and each pixel island is partially surrounded by atleast one sub-shielding unit in a direction parallel to the displaypanel, i.e., in a direction parallel to the first substrate 201. Asillustrated in FIG. 8B, each pixel island is surrounded by twosub-shielding units, so that, for example, the divergence angle of light47 emitted from the second pixel island 21 b is limited, and all of thelight 47 are transmitted to the first microlens 20 b which correspondsto the second pixel island 21 b, and not to the first microlenses (e.g.,the first microlens 20 a and the first microlens 20 c) which correspondto the pixel islands adjacent thereto (e.g., the first pixel island 21 aand the third pixel island 21 c).

For example, the shape, thickness, material or the like of the shieldinglayer 27 may be designed according to actual application requirements,as long as the shielding layer 27 may prevent light emitted fromdifferent pixel islands from interfering with each other, and thepresent disclosure is not limited to this. For example, eachsub-shielding unit in the shielding layer 27 may be a rectangularcolumn. The shielding layer 27 may be made of an opaque material such asa dark color (e.g., black) resin. Alternatively, the shielding layer 27may be a polarizer, and a transmission axis of the shielding layer 27is, for example, perpendicular to the first polarization direction, sothat the first polarized light having the first polarization directionemitted from the pixel island array 11 cannot pass through the shieldinglayer 27.

For example, as illustrated in FIG. 8C, in some examples, each pixelisland is surrounded by four sub-shielding units. The shielding layer 27may include a first sub-shielding unit 27 a, a second sub-shielding unit27 b, a third sub-shielding unit 27 c and a fourth sub-shielding unit 27d. The first sub-shielding unit 27 a, the second sub-shielding unit 27b, the third sub-shielding unit 27 c and the fourth sub-shielding unit27 d surround the first pixel island 21 a, thereby ensuring that lightemitted from the first pixel island 21 a is not transmitted to the firstmicrolenses which correspond to other pixel islands, in a firstdirection and a second direction. For example, the first direction andthe second direction are perpendicular. As illustrated in FIG. 8C, inthe first direction, two sub-shielding units are provided between twoadjacent pixel islands, and in the second direction, two sub-shieldingunits are also provided between two adjacent pixel islands, and thepresent disclosure is not limited to this. For example, in otherexamples, only one sub-shielding unit may be provided between twoadjacent pixel islands in the first direction, and only onesub-shielding unit may be provided between two adjacent pixel islands inthe second direction.

It should be noted that the display panel 100 illustrated in FIGS. 3A to3C may also include a shielding layer so as to prevent light emittedfrom different pixel islands from interfering with each other.

In the above drawings illustrating the embodiments of the presentdisclosure, although only one second lens is illustrated on the userviewing side of the display panel, a plurality of second lenses may beprovided on the user viewing side so as to implement the imagingfunction, and the embodiments of the present disclosure are not limitedto this.

An embodiment of the present disclosure also provides a display device,and FIG. 9 is a schematic block diagram of a display device provided byan embodiment of the present disclosure. As illustrated in FIG. 9 , adisplay device 900 includes a display panel 901, which may be thedisplay panel according to any one of the embodiments described above.

For example, the display device 900 may be an augmented reality displaydevice, and the augmented reality display device may include ahead-mounted display such as AR glasses or the like.

It should be understood that there are other components of the displaydevice 900 (e.g., control device, image data encoding/decoding device,processor, etc.) by those of ordinary skill in the art, which are notrepeated here, and should not be taken as limitations to the presentdisclosure.

An embodiment of the present disclosure also provides a display method,which may be applied to the display panel according to any of the aboveembodiments. FIG. 10 is a flowchart of a display method provided by anembodiment of the present disclosure, FIG. 11A is a schematic diagram ofimaging of step S20 in the display method illustrated in FIG. 10 , andFIG. 11B is a schematic diagram of imaging of step S30 in the displaymethod illustrated in FIG. 10 .

For example, as illustrated in FIG. 10 , the display method may includethe following steps:

S10: a plurality of sub-original images are displayed by a pixel islandarray;

S20: light emitted from the plurality of sub-original images isconverged so as to obtain imaging light, and a first virtual image isformed by the imaging light on a side of a first microlens array whichis away from a user viewing side of the display panel;

S30: the imaging light is converged so as to obtain a second virtualimage.

For example, in step S10, each pixel island in the pixel island arraymay be controlled to display sub-original images according to actualrequirements, and the plurality of sub-original images form a completeoriginal image.

For example, the first virtual image is a virtual image in which theplurality of sub-original images are stitched and enlarged.

For example, in step S20, the imaging light includes a plurality ofsub-imaging light, a plurality of first microlenses in the firstmicrolens array 20 respectively converge the light emitted from theplurality of sub-original images so as to obtain the plurality ofsub-imaging light, the plurality of sub-imaging light may berespectively imaged as a plurality of sub-virtual images, and theplurality of sub-virtual images are stitched to form a consecutive firstvirtual image. As illustrated in FIG. 11A, the first microlens array 20includes a first microlens 20 a, a first microlens 20 b, a firstmicrolens 20 c and a first microlens 20 d, and the pixel island array 21includes a first pixel island 21 a, a second pixel island 21 b, a thirdpixel island 21 c and a fourth pixel island 21 d. The first pixel island21 a displays a first sub-original image, the first microlens 20 aconverges light emitted from the first sub-original image so as toobtain first sub-imaging light, the first sub-imaging light is capableof forming a first sub-virtual image 30 a, and the first sub-virtualimage 30 a is an enlarged virtual image of the first sub-original image.The second pixel island 21 b displays a second sub-original image, thefirst microlens 20 b converges light emitted from the secondsub-original image so as to obtain second sub-imaging light, the secondsub-imaging light is capable of forming a second sub-virtual image 30 b,and the second sub-virtual image 30 b is an enlarged virtual image ofthe second sub-original image. The third pixel island 21 c displays athird sub-original image, the first microlens 20 c converges lightemitted from the third sub-original image so as to obtain thirdsub-imaging light, the third sub-imaging light is capable of forming athird sub-virtual image 30 c, and the third sub-virtual image 30 c is anenlarged virtual image of the third sub-original image. The fourth pixelisland 21 d displays a fourth sub-original image, the first microlens 20d converges light emitted from the fourth sub-original image so as toobtain fourth sub-imaging light, the fourth sub-imaging light is capableof forming a fourth sub-virtual image 30 d, and the fourth sub-virtualimage 30 d is an enlarged virtual image of the fourth sub-originalimage. The first sub-virtual image 30 a, the second sub-virtual image 30b, the third sub-virtual image 30 c and the fourth sub-virtual image 30d are stitched for obtaining a consecutive first virtual image 30, andthe first virtual image 30 is an enlarged virtual image of the completeoriginal image displayed by the pixel island array 21.

For example, as illustrated in FIG. 11A, the display panel furtherincludes a compensation layer 25 for balancing the deflection effect ofthe first microlens array 20 on ambient light.

For example, in step S30, the second lens converges the imaging light soas to obtain the second virtual image, and the second virtual image isan enlarged virtual image of the first virtual image. As illustrated inFIG. 11B, the second lens 22 may be a liquid crystal flat lens. Thefirst polarized light emitted from the pixel island array 21 isreflected and converged by the first microlens array 20, the reflectedfirst polarized light is incident into the second lens 22, and when thereflected first polarized light passes through the second lens 22, itsoptical path is deflected, so that the light exited through the secondlens 22 may be transmitted to the human eye 35, and the human eye 35finally sees the complete second virtual image 31. For example, asillustrated in FIG. 11B, the display panel further includes a firstpolarizer 24. The first polarizer 24 is used for filtering ambient lightincident from the back side which is opposite to the user viewing sideof the display panel so as to obtain second polarized light having asecond polarization direction, and the second lens 22 has no modulationeffect on the second polarized light, so that ambient light transmittedthrough the entire display panel is not modulated by the second lens 22,thereby ensuring the display effect of augmented reality display.

For the present disclosure, the following statements should be noted:

(1) The accompanying drawings involve only the structure(s) inconnection with the embodiment(s) of the present disclosure, and forother structure(s), reference can be made to common design(s).

(2) The embodiments of the present disclosure and features in theembodiments may be combined with each other to obtain new embodiments ifthey do not conflict with each other.

The above description is only specific implementation of the presentdisclosure, but the scope of the present disclosure is not limited tothis, and the scope of the present disclosure is defined by theaccompanying claims.

What is claimed is:
 1. A display panel, comprising: a first microlensarray, a pixel island array and a second lens, and wherein the pixelisland array is configured to display a plurality of sub-originalimages; the first microlens array is configured to converge lightemitted from the plurality of sub-original images so as to obtainimaging light, and a first virtual image is formed by the imaging lighton a side of the first microlens array which is away from a user viewingside of the display panel; and the second lens is on the user viewingside of the display panel relative to the first microlens array, and thesecond lens is configured to converge the imaging light so as to obtaina second virtual image, wherein the first virtual image is a virtualimage in which the plurality of sub-original images are stitched andenlarged, and the second virtual image is an enlarged virtual image ofthe first virtual image.
 2. The display panel according to claim 1,wherein the second lens is a polarized lens, configured to modulateincident light having a first polarization direction and transmitincident light having a second polarization direction perpendicular tothe first polarization direction, the pixel island array is configuredto emit first polarized light having the first polarization direction;and the polarized lens comprises a liquid crystal lens or a lens made ofa birefringent material.
 3. The display panel according to claim 2,further comprising a first polarizer, and wherein the first polarizer isconfigured to filter ambient light incident from a back side which isopposite to the user viewing side of the display panel, so as to obtainsecond polarized light having the second polarization direction, whereinthe first microlens array and the pixel island array are between thefirst polarizer and the second lens; and wherein a display surface ofthe pixel island array is provided with a second polarizer so as to exitthe first polarized light having the first polarization direction. 4.The display panel according to claim 1, further comprising a firstsubstrate, and wherein the first substrate is a transparent substrate,the first microlens array and the pixel island array are on the firstsubstrate; a display surface of the pixel island array faces the firstmicrolens array.
 5. The display panel according to claim 4, wherein thefirst microlens array has a transmissive structure, and the firstmicrolens array is between the pixel island array and the second lens ina direction perpendicular to the first substrate.
 6. The display panelaccording to claim 4, further comprising a third microlens array, andwherein the third microlens array is on a first side of the firstsubstrate, the first side of the first substrate faces a back side whichis opposite to the user viewing side of the display panel, and the thirdmicrolens array is configured to compensate for deflection effects ofthe first microlens array on ambient light.
 7. The display panelaccording to claim 6, wherein a center of the first microlens array isaligned with a center of the third microlens array, in a directionperpendicular to the first substrate.
 8. The display panel according toclaim 6, wherein the first microlens array comprises a plurality offirst microlenses, the third microlens array comprises a plurality ofthird microlenses, and the plurality of first microlenses correspond tothe plurality of third microlenses one by one, and each of the firstmicrolenses is arranged to overlap a corresponding third microlens in adirection perpendicular to the first substrate.
 9. The display panelaccording to claim 6, further comprising a first flat layer, and whereinthe first flat layer is on a side of the pixel island array which isaway from the first substrate, and between the pixel island array andthe third microlens array.
 10. The display panel according to claim 9,further comprising a second flat layer, and wherein the second flatlayer is on a side of the third microlens array which is away from thefirst flat layer, and is between the third microlens array and a firstpolarizer, and a refractive index of the second flat layer is differentfrom a refractive index of the third microlens array.
 11. The displaypanel according to claim 4, wherein the first microlens array has areflective structure, and the pixel island array is between the firstmicrolens array and the second lens in a direction perpendicular to thefirst substrate.
 12. The display panel according to claim 11, whereinthe first microlens array comprises a plurality of first microlenses,and a surface of the plurality of first microlenses which is away fromthe pixel island array has a transflective film.
 13. The display panelaccording to claim 11, wherein the first microlens array is on a firstside of the first substrate, the pixel island array is on a second sideof the first substrate, the first side of the first substrate faces aback side which is opposite to the user viewing side of the displaypanel, the second side of the first substrate faces the user viewingside of the display panel, and a first polarizer is on a side of thefirst microlens array which is away from the first substrate.
 14. Thedisplay panel according to claim 11, further comprising a compensationlayer, and wherein the compensation layer is between the first microlensarray and a first polarizer, and is configured to compensate fordeflection effects of the first microlens array on ambient light. 15.The display panel according to claim 14, wherein the first microlensarray is in direct contact with the compensation layer, and refractiveindex of the first microlens array and refractive index of thecompensation layer are the same.
 16. The display panel according toclaim 4, further comprising a second substrate, and wherein the secondsubstrate is a transparent substrate and is combined with the firstsubstrate in parallel, the second substrate is closer to the userviewing side of the display panel relative to the first substrate, andthe second lens is arranged on the second substrate; and wherein thesecond lens is arranged on a side of the second substrate which is closeto or away from the first substrate.
 17. The display panel according toclaim 1, wherein the pixel island array comprises a plurality of pixelislands spaced apart from each other, a gap between pixel islands allowsambient light from a back side of the display panel to pass through, andthe back side of the display panel is opposite to the user viewing sideof the display panel, the first microlens array comprises a plurality offirst microlenses, and the plurality of pixel islands correspond to theplurality of first microlenses one by one, and each of the firstmicrolenses is arranged to overlap a corresponding pixel island in adirection perpendicular to the display panel, wherein a center of thepixel island array is aligned with a center of the first microlens arrayin the direction perpendicular to the display panel; and wherein eachpixel island comprises a plurality of pixels, and each pixel may be anorganic light emitting diode pixel, an inorganic light emitting diodepixel, or a liquid crystal display pixel.
 18. The display panelaccording to claim 17, further comprising a shielding layer, and whereinthe shielding layer is arranged between adjacent pixel islands in adirection parallel to the display panel and is configured to preventlight emitted from the adjacent pixel islands from interfering with eachother; and wherein the shielding layer comprises a plurality ofsub-shielding units, and each pixel island is partially surrounded by atleast one sub-shielding unit in the direction parallel to the displaypanel.
 19. A display device, comprising the display panel according toclaim
 1. 20. A display method, applicable to the display panel accordingto claim 1, comprising: displaying the plurality of sub-original imagesthrough the pixel island array; converging the light emitted from theplurality of sub-original images so as to obtain the imaging light,wherein the imaging light is capable of forming the first virtual imageon the side of the first microlens array which is away from the userviewing side of the display panel; and converging the imaging light soas to obtain the second virtual image, wherein the first virtual imageis the virtual image in which the plurality of sub-original images arestitched and enlarged, and the second virtual image is the enlargedvirtual image of the first virtual image.